The RAM MOUNTS Twist Lock Suction Cup Mount with Custom GoPro Hero Adapter allows you to attach a GoPro HERO action camera to a variety of smooth, flat surfaces including glass, non-porous plastics, painted sheet metal, and more. For courser surfaces you can even employ one of the RAM MOUNTS adhesive disks, available separately, between the suction and the mounting surface. Linking the suction cup and the GoPro mount there is a 3" extension arm that is articulated at both ends using ball joints. A single knob unlocks both joints, allowing you to tilt, rotate, raise/lower, and swivel the camera into just about any angle conceivable.